I think it’s false. they are developing but not fully developed
The answer is The Surface Mining Control & Reclamation Act of 1977 (SMCRA).
One of the major results of the attack on the Lusitania was that "<span>d. America threatened to cut off ties with Germany," since Americans had died in the attack. Two years later the US would declare war on Germany. </span>
Represents Theodore Roosevelt creating the Panama Canal
Railroads made transportation of materials, supplies, etc much faster and easier.
Canals (such as the panama canal) helped make water transportation easier and quicker.
Roads made everyday travel easier